Dredger for pulverulent material.



l C. B. NESBITT.

DREDGER FOB. PULVERULENT MATERIAL. APPLICATION FILED MAY 20, 190s.

924,491.` y .Patented Junes,19o9.

i N v wn'NEs Esw. mvENToR VUNITEDy sTATEs PATENT OFFICE.

CHARLES Bj. NEsIITT, OFZELIENOPLE, `P'E-NNSYL'VANIA,AssIGNoR To IRON CITY SANITARY MANUFACTURING COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENN.-

SYLVANIA.

DREDGER FOR PULVER'ULENT MATERIAL.

v Patented .lune 8, 1909.

Application led May 20, 1908'. Serial No. 433,907.

To all whom it may concern:

Be it known that I, CHARLES a resident of Zelienople, in the county of Butler and State of Pennsylvania, have invented a new and useful Improvement in Dredgers for Pulverulent Material; and-I do hereby delClare the following to be a full, clear, and exact description thereof.

My invention relates to dredgers for pulverulent materiahand has special reference to such dredgers for use in sifting and distributing powdered enameling material on the 'sur'- face of bath tubs. and other vessels and artispecifically set forth and described and par# ticrxijlarly ointed outI in the claims.

4 o ena le others skilled in the art to which my invention appertains to construct and use my improved dredger, I will describe the same more fully, referring to the accompanyin drawing, in Whichrq igure 1 is a to View of a dredger embodying my inventlon. Fig. 2 is a longitudinal section ofthe same. Fig. 3 is a vertical section on the line 3 3 Fig.- 2 looking in the.

direction of the arrow.

Like symbols of reference herein indicate like parts in each ofthe iigures of the drawmg.

As illustrated in the drawing, 1 represents the sieve or sitter which Iconsists of av trough or box-like receptacle 2, referably formed of light sheet metal and aving a -wire cloth screen 3 at the bottom of the same through which the enameling material is shaken. The rece tacle 2 is supported at its top portion witiiin a forked or bifu-rcated' arm 4 which extends around. said portion and has ypins 5 at its ends for fitting loosely within slotted holes 6 located centrally of said receptacle and` on opposite sides of the same. This arm 4 has a vertical portion 7 which extends down from the same and has a tubular portion 7 at its lower end for supporting one end of the tubular Ihandle portion 9 having ythe rod 8 within the saine. Thearrn` 4 is split at its lower end to form the spring por. ltions 10, which are adapted to be clamped around the handle portion 9 and support the saine by means 'of a screw-.bolt 11 passing throughsaid portions 10. The rod 8 .extends across the lower portion of the receptacle 2 below the supporting pins 5, and through holes 12 in the same andis secured in lace by means of the nuts 18 engaging `wit the threaded portions 14 on said rodl and fitting against the inner and outer sides of said receptacle, While a jam nut 15 engages with the `other one ofv said threaded portions 14 and l lfits against the nut 13.

A casing 16 is connectedto the Opposite end ofthe handle portion 9 by means of a sleeve 17 extending out from one side of said casing and fitting over and around said end, and a handle 18 fits Within and is connected to a like sleeve portion 18 extending out 'from the opposite side" of said casing and forming part of the cover 16 therefor. Within the casing 16 is th'e alternating magnet 19 Which has a pivoted armature 20 connected thereto and to a sleeve or coupling 21 Vconnected to the e'nd of the rod-8. A setscrew 22 extends throu h the casing 16 and between said screw an the armaturey 2O a sl iral spring 23 is interposed for adjusting t e movement of said armature through the 'tension 'in said spring. .Set screws 24 and 25 extend through the sleeve 18 on the casing 16v and on opposite sides of said sleeve for engaging with the cou ling sleeve 21 between the armature 20 an rod 8 to adjust the movement of said rod, the screw 25 being adapted to be set in the position desired, and

the screw 24 being provided with a handle.

24 for moving the saine in its adjustment for said rod. l

Extending through the handle 18 are the two wires 26- and 27l which lead from any suitable source of electrical supply by any suitable connection, the Wire 27 being d1- rectly connected at its inner end`to-one of the coils 19 in the magnet 19 and the other wire 26 being connected to one end of a Inovable plate 28 in 'said handle. The opposite.

end of the plate 28 has la contact pin 29 exl tending through the same and through said K handle for engaging with a contact plate 29 within said handle, and a wire 30 connects the plate 29 With the coll 19.

Vl' hen the dredger is connected up for use,

the current passes through the Wires 26 and 27 and the operator in pressing down the j contact pin will cause said pin to engage with the plate 29, thereby causing a circuit to be formed between said Wires and the wire 30, which circuit and through the coils l 19 in the magnet 19 will cause the armature i 20 to vibrate. By reason ofthe rod 8 being l connected to the armature 20 and to the l receptacle 2, the said rod and receptacle will l have a sliding or longitudinal movement imparted thereto through such receptacle being oosely mounted `at its upper end by its holes 6 on the pins 5 of the arm 4, and cause the enameling material within the said receptacle to be shaken through the screen 3 onto the article to be enameled. By the arrangement of the rod 8 within and passing i through the receptacle 2 yit will cause an equal movement of said receptacle on the pins 5 and thereby distribute such movement throughout the saine and for the material shaken through the screen 3.

lIt will thus be seen that my improved d redger for pulverulent material will enable the enamel to be deposited and distributed more evenly and quickly and will overcome the knocking devices or assistants usually employed in different ap aratus of this char` acter. rlhe dredger can lie easily and quickly connected up to any electric current for operating and will not require the employment or attachment of separate apparatus for Working the same. It will also be evident that the dredger will be under perfect control of the opeiator at all times and the vibration of the same regulated at will, while the device will permit the use of both hands to carry and manipulate the same, and if desired it can be movably suspended from above and operated by one hand, thereby relieving the operator of agreat deal of hard work and enabling him to tuin out more work in a shorter space of time than is possible in the use of ordinary dredgers.

The electrical device employed and forniing part of the dredger is of the ordinary and approved l'orm of construction, but any form of such device suitable for the purpose may be employed, while various otherdevices may be applied for moving the receptacle.

'lhe operation of the dredger wil not be ali'ected by the expansion and contraction of the parts of the same from the heat of the ar- 'ticle being enameled, it can be used for other l purposes, and various changes in the design I and construction of the various parts of the l saine may be resorted to without departingr from the spirit of the invention or sacrificing any of its advantages. i

What I claim as my invention, and desire to secureby Letters Patent, is

1. A dredger comprising a handle, a sieve or screen connected to said handle and loosely supported centrall thereon, a rod passing through and directl7T connected to said sieve at right angles to its said supports and belo the same, and means connected to said rod for moving the saine and sieve.

2. A dredger comprising a handle having a forked arm thereon, a sieve or screen connected to said arm and loosely supported centrally thereon, a rod passing through and directly connected to said sieve at right angles to its said supports and below the same, and means connected to said rod for moving the same and sieve.

3. A dredger comprising a handle, a forked arm on said handle having pins thereon, a sieve or screen connected to said pins through holes in said screen and adapted to be loosely supported centrally thereby, a rod passing through and directly connected to said sieve at right anglesto its said supports and below the same, and means connected to said rod for moving the same and sieve.

L1. A dredger comprising a handle, a forked arm on said handle having a vertical portion for being connected to said handle, pins on the forks of said arm, a sieve or screen connected to said pins through holes in said screen and adapted to be loosely supported centrally thereby, a rod passing through and directly connected to said sieve at right angles to its said supports and below the saine, and means connected to said rod for moving the same and sieve.

5. A dredgcr comprising a handle, a forked arm on said handle having a split vertical portion thereon for being clamped around said handle, pins on the forks of said arm, a sieve or screen connected to said pins through holes in said screen 'and adapted tobe loosely supported centrally thereby, a rod passing through and directly connected to said sieve at right angles to its said supports and below the saine, and means connected to said rod for moving Athe same and sieve.

In testimony whereof, l, the said @nannies B. NEsBiT'r, have hereunto set my hand.

CHARLES B. NESBITT.

Witnesses L WiLLiAM F. Foein., ROBERT GAius. 

